Quick stimulator question

In a pain forum I heard people saying their stimulator would turn on/off by itself or would not turn on/off when they were using the remote to do it. Was that topic brought up on here or a different site? I'm trying to compile recent info about stims for my friend who is considering going for a trial. I have a couple other friends with stims, but they don't know of this kind of occurance. I can't remember what the discussion concluded with, either stim malfunction or something causing it to malfunction, but would like to be able to tell my friend the outcome so I don't leave her hanging wondering what happened with it.